Calificación
Reparto

James Mason
Mr. Grimes / Voice of Killer Shark

Bernard Cribbins
Mr. Masterman / Voice of Eel

Billie Whitelaw
Mrs. Doasyouwouldbedoneby / Old Crone / Mrs. Tripp / Woman in Black / Water Babies 'Gate Keeper'

Tommy Pender
Tom

Samantha Gates
Elly

Joan Greenwood
Lady Harriet

David Tomlinson
Sir John / Voice of Polar Bear

Jon Pertwee
Salmon

David Jason
(voice)

Una Stubbs
(voice)